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https://issues.apache.org/jira/browse/LUCENE-8267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16598335#comment-16598335
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Dawid Weiss commented on LUCENE-8267:
-------------------------------------
It'd be ideal if Solr had a migration.txt file, not just changes.txt. It'd be a
better fit there. If you insist on having the FST50 mentioned, I'd suggest
something like:
{code}
* LUCENE-8267: Memory codecs have been removed from the codebase
(MemoryPostings,
MemoryDocValues). If you used postingsFormat="Memory" or
docValuesFormat="Memory", consider
using the defaults. For in-memory postings, you can try the "FST50" format as
an alternative
to "Memory". (Dawid Weiss)
{code}
> Remove memory codecs from the codebase
> --------------------------------------
>
> Key: LUCENE-8267
> URL: https://issues.apache.org/jira/browse/LUCENE-8267
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Major
> Fix For: master (8.0)
>
> Attachments: LUCENE-8267.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Memory codecs (MemoryPostings*, MemoryDocValues*) are part of random
> selection of codecs for tests and cause occasional OOMs when a test with huge
> data is selected. We don't use those memory codecs anywhere outside of tests,
> it has been suggested to just remove them to avoid maintenance costs and OOMs
> in tests. [1]
> [1] https://apache.markmail.org/thread/mj53os2ekyldsoy3
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